Eric J Markel, Weiqing Weng, Armen H Dekmezian, Andrew J Peacock: Thermoplastic elastomer compositions from branched olefin copolymers. Exxon Chemical Patents, William G Muller, Frank E Reid, November 14, 2000: US06147180 (138 worldwide citation)

The invention relates to a thermoplastic elastomer composition comprising a branched olefin copolymer derived from olefinically unsaturated monomers capable of insertion polymerization having A) a T.sub.g as measured by DSC less than or equal to 10.degree. C.; B) T.sub.m greater than 80.degree. C.; ...

Eric J Markel, Carlos U DeGracia, Armen H Dekmezian: High melt strength polyethylene compositions. Exxon Chemical Patents, William G Muller, Frank E Reid, September 5, 2000: US06114457 (129 worldwide citation)

The invention is a polyethylene composition having a polydispersity index of less than or equal to 3, an average branching index (g') as measured by GPC/Vis.gtoreq.0.9, and a melt strength (MS) (centiNewton, 190.degree. C.) that satisfies the relationship: ##EQU1## In a preferred embodiment these po ...

Chia Yung Cheng, Sudhin Datta, Pawan Kumar Agarwal: Elastic fibers and articles made therefrom, including crystalline and crystallizable polymers of propylene. ExxonMobil Chemical Patent, William G Muller, Paige Schmidt, January 29, 2002: US06342565 (124 worldwide citation)

Improved thermoplastic polymer soft elastic fiber blend compositions including a crystalline isotactic polypropylene component and a crystallizable alpha-olefin and propylene copolymer component, the copolymer comprising crystallizable alpha-olefin sequences. In a preferred embodiment, improved ther ...

Howard W Turner: Ionic metallocene catalyst compositions. Exxon Chemical Patents, Myron B Kurtzman, William G Muller, February 4, 1997: US05599761 (110 worldwide citation)

An ionic catalyst system component comprising a water-stable anion having a plurality of lipophilic radicals covalently coordinated to and shielding a central, formal charge bearing metal or metalloid atom, in which the lipophilic radicals of the anion include substituted aromatic radicals useful fo ...

Weiqing Weng, Eric J Markel, Armenag H Dekmezian, Palanisamy Arjunan: Branched polypropylene compositions. Exxon Chemical Patents, William G Muller, Douglas W Miller, Charles E Ronyan, May 1, 2001: US06225432 (87 worldwide citation)

Branched polypropylene compositions which have improved melt strength and good processability are provided. The branched polypropylene compositions of the present invention have a polydispersity of less than 4.0 and a melt point greater than 90° C. Further, the weight average branching index g of th ...

Eric J Markel: Preparation of vinyl-containing macromers. ExxonMobile Chemical Patents, William G Muller, Charles E Runyan, September 3, 2002: US06444773 (46 worldwide citation)

A composition of matter comprising vinyl ended copolymer chains having a number average molecular weight (M

Arnold Lustiger, David J Lohse, Blair A Graham: Polyethylene compositions for rotational molding. ExxonMobil Chemical Patents, William G Muller, Maria C Walsh, November 29, 2005: US06969741 (35 worldwide citation)

Polyethylene blend compositions suitable for rotomolding, rotomolded articles, and processes for rotomolding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.4 to 3.0 g/10 min and a density of from 0.910 to 0.930 g/cm3; and a second polyethyl ...

Charles Cozewith, Shiaw Ju, Gary W Verstrate: Copolymer compositions containing a narrow MWD component and process of making same. Exxon Research and Engineering Company, Steven H Markowitz, William G Muller, October 17, 1989: US04874820 (31 worldwide citation)

The present invention relates to polymeric composition of a first copolymer which includes at least one copolymer having at least one of Mw/Mn less than 2 and Mz/Mw less than 1.8; and a second copolymer having Mw/Mn greater than or equal to 2. The composition can be produced by preparing the first a ...

Rinaldo S Schiffino, Donna J Crowther, Bernard J Folie, John F Walzer Jr: Polymerization process for olefin copolymers using bridged hafnocene compounds. Exxon Mobil Chemical Patents, William G Muller, Charles E Runyan, April 17, 2001: US06218488 (27 worldwide citation)

The invention is a polymerization process for ethylene copolymers having a density less than 0.915 comprising contacting ethylene, one or more &agr;-olefin monomer, and optionally one or more diene monomer, with a catalyst composition comprising the reaction product of at least one organometallic Gr ...

Joseph C Floyd, Moses Olukayode Jejelowo, Donna Jean Crowther, George Alan Vaughan, Ching Tai Lue: Olefin polymerization process with alkyl-substituted metallocenes. ExxonMobil Chemical Patents, William G Muller, Charles E Runyan, December 3, 2002: US06489413 (26 worldwide citation)

The invention comprises an olefin polymerization process comprising contacting ethylene alone or with one or more olefinically unsaturated comonomers with a Group 3-6 metallocene catalyst compound comprising one &pgr;-bonded ring having a C